Sealing apparatus for a packaging machine

(19)

(11)

EP 0 999 139 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	18.07.2001 Bulletin 2001/29

(43)	Date of publication A2:
	10.05.2000 Bulletin 2000/19

(21)	Application number: 99308751.9

(22)	Date of filing: 03.11.1999

(51)	International Patent Classification (IPC)⁷: B65B 51/26, B65B 9/08

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

03.11.1998 US 185356

(71)	Applicant: Klockner Bartelt, Inc.
	Sarasota, Florida 34243 (US)

(72)	Inventors:
	Todd, James E. Sarasota, Florida 34234 (US) Brooker, Thomas E. Sarasota, Florida 34243 (US) Conn, Gregory A. Sarasota, Florida 34243 (US)

(74)	Representative: Mackenzie, Andrew Bryan et al
	Mathisen, Macara & Co., The Coach House, 6-8 Swakeleys Road Ickenham, Uxbridge UB10 8BZ Ickenham, Uxbridge UB10 8BZ (GB)

(54)	Sealing apparatus for a packaging machine

(57) A sealing mechanism for a form, fill and seal packing machine having box motion sealers suitable for forming seals in both continuously and intermittently advancing webs. The sealers are disposed on opposite sides of the web and are operable to reciprocate into and out of engagement with the web. The sealers are further supported on carriages moveable longitudinally along the web path. As a result, the sealers may be operated in the box motion in which the sealers actuate into engagement with the web as the carriages move longitudinally downstream at the web speed. The sealers remain engaged with the web for a time sufficient to form a seal in the web before retracting out of engagement. The carriages then return longitudinally upstream to initial positions. The box motion may be repeated to form a series of seals in the web.

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